After a phone screening with my squad's manager, invited out for a two hour interview on campus. Started with a tour around the Procore campus then met in a conference room with two mobile engineers. Went over a couple of points on my resume before starting the whiteboarding challenge. Afterwards, two senior engineers came in and asked more points about my resume and my interest in Procore. Pleasant, enthusiastic people at each turn, laughing along the way and seemed to be more interested in the conversation with you than with pristine technical ability.